Word: mammalian
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Dates: during 2000-2009
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...many, the notion that primitive hunters could have killed off more than 100 species of large animals has long seemed preposterous. While Homo sapiens certainly killed and ate the likes of mammoths and mastodons, notes Ross MacPhee, an expert on mammalian extinctions at New York City's American Museum of Natural History, it must have done so with great caution. As he puts it: "If some guy walked up to a mammoth armed only with a pointy stick, chances are he would have been road pizza within minutes...
While pursuing her postdoctoral studies at the National Institute of Health, Tilghman assisted other scientists in the laboratory of Dr. Philip Leder in cloning the first mammalian gene...
...some scientists caution about reading too much about mammalian aging into results from the worm...
...done. After one type of Australian spider lays her eggs, she lives barely long enough to see her young mature. Then she positions herself among them and slowly liquefies, transforming herself into an edible goo that gives her babies a nutritional kick start in life. The very idea of mammalian metabolism is a subtler case of maternal self-sacrifice. An organism taking in precious calories and then giving them away in the form of milk directly defies the me-first rule of all animal survival, yet mammal mothers do it willingly...
...size antelopes with massive curving horns, carnivores that must have looked like saber-toothed lions, two distinct species of hippo and at least two types of elephant, one of which had tusks that protruded downward from the lower jaw. We may never know the full extent of this incredible mammalian diversity, but there were probably more than twice as many species a million years ago as there are today...